Density & Specific Gravity
Hydrometers, alcoholmeters, pyknometers and relative-density bottles for reading density, specific gravity and concentration by scale.
8 categories · 333 published records. The catalogue we can supply is broader than the catalogue we publish — send us the item if you cannot find it.
Before you order
These read a number off a scale rather than measuring a volume, which is why they sit apart from volumetric ware. A hydrometer is specified by its RANGE and its smallest division, not by a capacity — a 0.600 to 0.700 instrument reading to 0.001 tells you nothing about a liquid at 1.2, and buying the wrong span is the commonest error in this group. Pyknometers and relative-density bottles are the reference method the hydrometers are checked against.
17 records
Cannot find it? Ask on WhatsApp →Alcoholmeters (Gay Lussac — Hydrometers)
Alcoholmeters (Gay Lussac, Hydrometers). Borosilicate glass 3.3. Listed in 00-100.
Indent00-100
Specification for Alcoholmeters (Gay Lussac — Hydrometers)
Specification for Alcoholmeters (Gay Lussac — Hydrometers) Material Borosilicate glass 3.3 Sizes 00-100 00-100 1% · 25 per case · Cat. 3054001 to 007 20-30%, 30-40%, · 0.10% · 5 per case · Cat. 3054002 to 012 80-90%, 90-100%, · 0.10% · 5 per case · Cat. 3054008 Typical applications
- Used to measure the alcohol % by volume in a liquid or distillate, Calibrated
Also known as
- Cat. 3054
- Alcoholmeters (Gay Lussac
Full record, hazard data and enquiry for Alcoholmeters (Gay Lussac — Hydrometers) →
Battery Hydrometers
Battery Hydrometers. Borosilicate glass 3.3.
IndentSpecification for Battery Hydrometers
Specification for Battery Hydrometers Material Borosilicate glass 3.3 AxB Heavy Duty 1.100 - 1.300 · tolerance ± 0.01 ml · 25 per case · Cat. 3056001 A2B Heavy Duty 1.100 - 1.300 · tolerance ± 0.002 ml · 25 per case · Cat. 3056002 Typical applications
- Used in battery manufacturing industries, automobile industries, railways,
- Used in the wine, sugar, carbonated beverage, fruit juice, fresh produce, maple
Also known as
- Cat. 3056
Full record, hazard data and enquiry for Battery Hydrometers →
Baume Glass Hydrometers
Baume Glass Hydrometers. Borosilicate glass 3.3. 3 sizes, 00-30 to 00-100.
Indent00-30 · 00-70 · 00-100
Specification for Baume Glass Hydrometers
Specification for Baume Glass Hydrometers Material Borosilicate glass 3.3 Sizes 00-30 · 00-70 · 00-100 00-30 0.5 ⁰Bé · 25 per case · Cat. 3053001 to 004 30-60, 00-40, 00-50 · 0.5 ⁰Bé · 20 per case · Cat. 3053002 to 007 00-20, 20-40, 40-60 · 0.2 ⁰Bé · 20 per case · Cat. 3053005 to 012 30-40, 40-50 · 0.1 ⁰Bé · 20 per case · Cat. 3053008 & Cat. 3053013 50-60, 60-70 0.1 ⁰Bé · 20 per case · Cat. 3053014 00-70 1 Bé · 25 per case · Cat. 3053015 00-100 1 Bé · 20 per case · Cat. 3053016 Typical applications
- Used to measure specific gravity on evenly spaced scale
- Used to measure the alcohol % by volume in a liquid or distillate, Calibrated
Also known as
- Cat. 3053
Full record, hazard data and enquiry for Baume Glass Hydrometers →
Brix Hydrometers with Built in — Thermometers (Brix Thermohydrometers)
Brix Hydrometers with Built in, Thermometers (Brix Thermohydrometers). Borosilicate glass 3.3.
IndentSpecification for Brix Hydrometers with Built in — Thermometers (Brix Thermohydrometers)
Specification for Brix Hydrometers with Built in — Thermometers (Brix Thermohydrometers) Material Borosilicate glass 3.3 0.1 ⁰Bx & 1⁰C 2 per case · Cat. 3057001 Typical applications
- Used in the wine, sugar, carbonated beverage, fruit juice, fresh produce, maple
Also known as
- Cat. 3057
- Brix Hydrometers with Built in
Density Hydrometers, M-50 Sp Series
Density Hydrometers, M-50 Sp Series. Borosilicate glass 3.3. 2 sizes, 0.600-0.650 to 1.050-1.100.
Indent0.600-0.650 · 1.050-1.100
Specification for Density Hydrometers, M-50 Sp Series
Specification for Density Hydrometers, M-50 Sp Series Material Borosilicate glass 3.3 Sizes 0.600-0.650 · 1.050-1.100 0.600-0.650 tolerance ± 0.001 ml · 10 per case · Cat. 3058001 to 005 0.750-0.800, 0.800-0.850, · tolerance ± 0.001 ml · 10 per case · Cat. 3058002 to 009 0.950-1.000, 1.000-1.050 · tolerance ± 0.001 ml · 10 per case · Cat. 3058006 1.050-1.100 tolerance ± 0.001 ml · 10 per case · Cat. 3058010 Typical applications
- These hydrometers are graduated to indicate density in g/ml, Used in petroleum
Also known as
- Cat. 3058
Full record, hazard data and enquiry for Density Hydrometers, M-50 Sp Series →
Hydrometers for Very High Liquids
Hydrometers for Very High Liquids. Borosilicate glass 3.3.
IndentSpecification for Hydrometers for Very High Liquids
Specification for Hydrometers for Very High Liquids Material Borosilicate glass 3.3 to 004 tolerance ± 0.005 ml · 5 per case · Cat. 3060001 to 007 tolerance ± 0.01 ml · 5 per case · Cat. 3060005 Typical applications
- Special Purpose Hydrometers designed for use very heavy liquids bromine,
Also known as
- Cat. 3060
Full record, hazard data and enquiry for Hydrometers for Very High Liquids →
Percentage Hydrometers
Percentage Hydrometers. Borosilicate glass 3.3.
IndentSpecification for Percentage Hydrometers
Specification for Percentage Hydrometers Material Borosilicate glass 3.3 0.20% 5 per case · Cat. 3059001 & 003 0.20% · 5 per case · Cat. 3059002 0.20% 5 per case · Cat. 3059004 0.20% 5 per case · Cat. 3059005 0.20% 5 per case · Cat. 3059006 Also known as
- Cat. 3059
Full record, hazard data and enquiry for Percentage Hydrometers →
Range Finder Glass Hydrometers
Range Finder Glass Hydrometers. Borosilicate glass 3.3.
IndentSpecification for Range Finder Glass Hydrometers
Specification for Range Finder Glass Hydrometers Material Borosilicate glass 3.3 0.010 & 1°Be 25 per case · Cat. 3050001 0.005 & 1°Be 20 per case · Cat. 3050002 1.000 - 1.500 & Baume 0-50 0.005 & 1°Be 20 per case · Cat. 3050003 1.500 - 2.000 & Baume 50-70 0.005 & 1°Be 20 per case · Cat. 3050004 Typical applications
- General Purpose Hydrometer for selecting appropriate hydrometer
- Calibrated at 20°C, Length 300 mm, Accuracy : ±1 division Used is Chemical,
Also known as
- Cat. 3050
Full record, hazard data and enquiry for Range Finder Glass Hydrometers →
Relative Density Bottles — (Pyknometer) with I/C PTFE Stoppper
Relative Density Bottles, (Pyknometer) with I/C PTFE Stoppper. Borosilicate glass 3.3. 3 sizes, 10 ml to 50 ml. Complies with IS 5717, ISO 3507.
Indent10 ml · 25 ml · 50 ml
Specification for Relative Density Bottles — (Pyknometer) with I/C PTFE Stoppper
Specification for Relative Density Bottles — (Pyknometer) with I/C PTFE Stoppper Material Borosilicate glass 3.3 Sizes 10 ml · 25 ml · 50 ml 10 1 · O.D. × height 29 x 48 mm · joint 10 / 15 · 10 per case · Cat. 1625006 25 2 · O.D. × height 40 x 55 mm · joint 10 / 15 · 10 per case · Cat. 1625009 50 3 · O.D. × height 50 x 65 mm · joint 10 / 15 · 5 per case · Cat. 1625012 Standards
IS 5717ISO 3507Typical applications
- All sizes have a durable matt-finished enamelled area for marking
Also known as
- Cat. 1625
- Relative Density Bottles
Relative Density Bottles — (Pyknometer) with I/C PTFE Stoppper with Class a Certificate
Relative Density Bottles, (Pyknometer) with I/C PTFE Stoppper with Class a Certificate. Borosilicate glass 3.3. 3 sizes, 10 ml to 50 ml. Complies with IS 5717, ISO 3507.
IndentClass A10 ml · 25 ml · 50 ml
Specification for Relative Density Bottles — (Pyknometer) with I/C PTFE Stoppper with Class a Certificate
Specification for Relative Density Bottles — (Pyknometer) with I/C PTFE Stoppper with Class a Certificate Material Borosilicate glass 3.3 Accuracy class Class A Sizes 10 ml · 25 ml · 50 ml 10 tolerance ± 0.3 ml · O.D. × height 29 x 48 mm · joint 10 / 15 · 5 per case · Cat. 1624006 25 tolerance ± 0.8 ml · O.D. × height 40 x 55 mm · joint 10 / 15 · 5 per case · Cat. 1624009 50 1 · O.D. × height 50 x 65 mm · joint 10 / 15 · 5 per case · Cat. 1624012 Standards
IS 5717ISO 3507Typical applications
- All sizes have a durable matt-finished enamelled area for marking
Also known as
- Cat. 1624
- Relative Density Bottles
Specific Gravity Bottles (Pyknometer) — With Thermometer and Capillary Side Tube
Specific Gravity Bottles (Pyknometer), With Thermometer and Capillary Side Tube. Borosilicate glass 3.3. 3 sizes, 10 ml to 50 ml. Complies with IS 5717, ISO 3507.
Indent10 ml · 25 ml · 50 ml
Specification for Specific Gravity Bottles (Pyknometer) — With Thermometer and Capillary Side Tube
Specification for Specific Gravity Bottles (Pyknometer) — With Thermometer and Capillary Side Tube Material Borosilicate glass 3.3 Sizes 10 ml · 25 ml · 50 ml 10 1 · O.D. × height 29 x 48 mm · joint 10 / 19 · 5 per case · Cat. 1627006 25 2 · O.D. × height 40 x 55 mm · joint 10 / 19 · 5 per case · Cat. 1627009 50 3 · O.D. × height 50 x 65 mm · joint 10 / 19 · 5 per case · Cat. 1627012 Standards
IS 5717ISO 3507Typical applications
- All sizes have a durable matt-finished enamelled area for marking
Also known as
- Cat. 1627
- Specific Gravity Bottles (Pyknometer)
Specific Gravity Glass Hydrometers, — 100 Divisions Range
Specific Gravity Glass Hydrometers,, 100 Divisions Range. Borosilicate glass 3.3. Listed in 0.600 - 0.700.
Indent0.600 - 0.700
Specification for Specific Gravity Glass Hydrometers, — 100 Divisions Range
Specification for Specific Gravity Glass Hydrometers, — 100 Divisions Range Material Borosilicate glass 3.3 Sizes 0.600 - 0.700 0.600 - 0.700 tolerance ± 0.001 ml · 20 per case · Cat. 3052001 to 004 0.800 - 0.900, · tolerance ± 0.001 ml · 20 per case · Cat. 3052002 to 007 1.100 - 1.200, · tolerance ± 0.001 ml · 20 per case · Cat. 3052005 & 009 tolerance ± 0.001 ml · 20 per case · Cat. 3052008 to 012 1.600 - 1.700, · tolerance ± 0.001 ml · 20 per case · Cat. 3052010 & 014 tolerance ± 0.001 ml · 20 per case · Cat. 3052013 Also known as
- Cat. 3052
- Specific Gravity Glass Hydrometers,
Full record, hazard data and enquiry for Specific Gravity Glass Hydrometers, — 100 Divisions Range →
Tapped Density Cylinder
Tapped Density Cylinder. Borosilicate glass 3.3.
IndentSpecification for Tapped Density Cylinder
Specification for Tapped Density Cylinder Material Borosilicate glass 3.3 100 & 250 1 Each · Cat. 3032041 Typical applications
- Used in tapped density apparatus to measure bulk density of powders
Also known as
- Cat. 3032
Full record, hazard data and enquiry for Tapped Density Cylinder →
Tapped Density Cylinder — 100 ml
Tapped Density Cylinder. Borosilicate glass 3.3. Listed in 100 ml. Complies with IS 4849.
Indent100 ml
Specification for Tapped Density Cylinder — 100 ml
Specification for Tapped Density Cylinder — 100 ml Material Borosilicate glass 3.3 Sizes 100 ml 100 2 per case · Cat. 3033016 Standards
IS 4849Also known as
- Cat. 3033
Full record, hazard data and enquiry for Tapped Density Cylinder — 100 ml →
Tapped Density Cylinder — 250 ml
Tapped Density Cylinder. Borosilicate glass 3.3. Listed in 250 ml. Complies with IS 4849.
Indent250 ml
Specification for Tapped Density Cylinder — 250 ml
Specification for Tapped Density Cylinder — 250 ml Material Borosilicate glass 3.3 Sizes 250 ml 250 2 per case · Cat. 3034021 Standards
IS 4849Typical applications
- The cylinders are graduated to indicate rainfall in mm when used with appropriate
Also known as
- Cat. 3034
Full record, hazard data and enquiry for Tapped Density Cylinder — 250 ml →
Triple Scale Hydrometers
Triple Scale Hydrometers. Borosilicate glass 3.3.
IndentSpecification for Triple Scale Hydrometers
Specification for Triple Scale Hydrometers Material Borosilicate glass 3.3 Brix : 0 – 39 °Bx Alcohole % by 20 per case · Cat. 3055001 Typical applications
- Used in home brewing and wine making., Used for brewing wine, beer,
Also known as
- Cat. 3055
Full record, hazard data and enquiry for Triple Scale Hydrometers →
Twaddle Glass Hydrometer
Twaddle Glass Hydrometer. Borosilicate glass 3.3.
IndentSpecification for Twaddle Glass Hydrometer
Specification for Twaddle Glass Hydrometer Material Borosilicate glass 3.3 to 003 1, 2 · 1 · 25 per case · Cat. 3051001 to 006 4, 5 · 1 · 25 per case · Cat. 3051004 Typical applications
- Calibrated at 20°C, Length 300 mm, Accuracy : ±1 division Used is Chemical,
Also known as
- Cat. 3051
Full record, hazard data and enquiry for Twaddle Glass Hydrometer →
What laboratories usually order alongside this.
Volumetric Ware — Class A & B
Volumetric flasks, pipettes, burettes and measuring cylinders in certified accuracy classes.
Borosilicate 3.3 Glassware
Beakers, flasks, condensers, reagent bottles, funnels and extraction assemblies in low-expansion borosilicate glass.
Class A is a tolerance. It is not a calibration.
This distinction costs accredited laboratories real audit findings. Class A volumetric ware carries roughly half the tolerance of Class B and ships with a conformity certificate for the batch. Class AS adds a specified delivery time on pipettes and burettes.
But a conformity certificate is a manufacturing statement, not a traceable calibration. If your laboratory holds a NABL scope, that Class A flask still needs periodic calibration under a volume scope, with a certificate showing the traceability chain. Buying Class A does not discharge the obligation.
Read the TC/“In” and TD/“Ex” markings too — To Contain and To Deliver are not interchangeable, and the calibration temperature (conventionally 20 °C) is on the item for a reason.
On glass: Borosilicate 3.3 is a glass specification under ISO 3585, not a brand. It designates a coefficient of linear expansion of about 3.3 × 10⁻⁶ K⁻¹ — the property that gives thermal shock resistance and chemical durability. Soda-glass equivalents cost less and crack on a hot plate.
On safety: this is the category most often left until after an audit finding. Send us your chemical register and we will size the eyewash provision, map glove chemistry to breakthrough times, and specify a spill kit against the largest container on your shelf rather than against a typical spill.
